1 /* vi: set sw=4 ts=4: */
3 * Mini run-parts implementation for busybox
5 * Copyright (C) 2007 Bernhard Reutner-Fischer
7 * Based on a older version that was in busybox which was 1k big.
8 * Copyright (C) 2001 by Emanuele Aina <emanuele.aina@tiscali.it>
10 * Based on the Debian run-parts program, version 1.15
11 * Copyright (C) 1996 Jeff Noxon <jeff@router.patch.net>,
12 * Copyright (C) 1996-1999 Guy Maor <maor@debian.org>
14 * Licensed under GPLv2 or later, see file LICENSE in this source tree.
17 /* This is my first attempt to write a program in C (well, this is my first
18 * attempt to write a program! :-) . */
20 /* This piece of code is heavily based on the original version of run-parts,
21 * taken from debian-utils. I've only removed the long options and the
22 * report mode. As the original run-parts support only long options, I've
23 * broken compatibility because the BusyBox policy doesn't allow them.
25 //config:config RUN_PARTS
26 //config: bool "run-parts"
29 //config: run-parts is a utility designed to run all the scripts in a directory.
31 //config: It is useful to set up a directory like cron.daily, where you need to
32 //config: execute all the scripts in that directory.
34 //config: In this implementation of run-parts some features (such as report
35 //config: mode) are not implemented.
37 //config: Unless you know that run-parts is used in some of your scripts
38 //config: you can safely say N here.
40 //config:config FEATURE_RUN_PARTS_LONG_OPTIONS
41 //config: bool "Enable long options"
43 //config: depends on RUN_PARTS && LONG_OPTS
45 //config: Support long options for the run-parts applet.
47 //config:config FEATURE_RUN_PARTS_FANCY
48 //config: bool "Support additional arguments"
50 //config: depends on RUN_PARTS
52 //config: Support additional options:
53 //config: -l --list print the names of the all matching files (not
54 //config: limited to executables), but don't actually run them.
56 //applet:IF_RUN_PARTS(APPLET_ODDNAME(run-parts, run_parts, BB_DIR_BIN, BB_SUID_DROP, run_parts))
58 //kbuild:lib-$(CONFIG_RUN_PARTS) += run_parts.o
60 //usage:#define run_parts_trivial_usage
61 //usage: "[-a ARG]... [-u UMASK] "
62 //usage: IF_FEATURE_RUN_PARTS_LONG_OPTIONS("[--reverse] [--test] [--exit-on-error] "IF_FEATURE_RUN_PARTS_FANCY("[--list] "))
64 //usage:#define run_parts_full_usage "\n\n"
65 //usage: "Run a bunch of scripts in DIRECTORY\n"
66 //usage: "\n -a ARG Pass ARG as argument to scripts"
67 //usage: "\n -u UMASK Set UMASK before running scripts"
68 //usage: IF_FEATURE_RUN_PARTS_LONG_OPTIONS(
69 //usage: "\n --reverse Reverse execution order"
70 //usage: "\n --test Dry run"
71 //usage: "\n --exit-on-error Exit if a script exits with non-zero"
72 //usage: IF_FEATURE_RUN_PARTS_FANCY(
73 //usage: "\n --list Print names of matching files even if they are not executable"
77 //usage:#define run_parts_example_usage
78 //usage: "$ run-parts -a start /etc/init.d\n"
79 //usage: "$ run-parts -a stop=now /etc/init.d\n\n"
80 //usage: "Let's assume you have a script foo/dosomething:\n"
81 //usage: "#!/bin/sh\n"
82 //usage: "for i in $*; do eval $i; done; unset i\n"
83 //usage: "case \"$1\" in\n"
84 //usage: "start*) echo starting something;;\n"
85 //usage: "stop*) set -x; shutdown -h $stop;;\n"
87 //usage: "Running this yields:\n"
88 //usage: "$run-parts -a stop=+4m foo/\n"
89 //usage: "+ shutdown -h +4m"
92 #include "common_bufsiz.h"
97 char *cmd[2 /* using 1 provokes compiler warning */];
99 #define G (*(struct globals*)bb_common_bufsiz1)
100 #define names (G.names)
103 #define INIT_G() do { setup_common_bufsiz(); } while (0)
105 enum { NUM_CMD = (COMMON_BUFSIZE - sizeof(G)) / sizeof(cmd[0]) - 1 };
110 OPT_r = (1 << 2) * ENABLE_FEATURE_RUN_PARTS_LONG_OPTIONS,
111 OPT_t = (1 << 3) * ENABLE_FEATURE_RUN_PARTS_LONG_OPTIONS,
112 OPT_e = (1 << 4) * ENABLE_FEATURE_RUN_PARTS_LONG_OPTIONS,
113 OPT_l = (1 << 5) * ENABLE_FEATURE_RUN_PARTS_LONG_OPTIONS
114 * ENABLE_FEATURE_RUN_PARTS_FANCY,
117 /* Is this a valid filename (upper/lower alpha, digits,
118 * underscores, and hyphens only?)
120 static bool invalid_name(const char *c)
124 while (*c && (isalnum(*c) || *c == '_' || *c == '-'))
127 return *c; /* TRUE (!0) if terminating NUL is not reached */
130 static int bb_alphasort(const void *p1, const void *p2)
132 int r = strcmp(*(char **) p1, *(char **) p2);
133 return (option_mask32 & OPT_r) ? -r : r;
136 static int FAST_FUNC act(const char *file, struct stat *statbuf, void *args UNUSED_PARAM, int depth)
142 && ( !(statbuf->st_mode & (S_IFREG | S_IFLNK))
143 || invalid_name(file)
144 || (!(option_mask32 & OPT_l) && access(file, X_OK) != 0))
149 names = xrealloc_vector(names, 4, cur);
150 names[cur++] = xstrdup(file);
151 /*names[cur] = NULL; - xrealloc_vector did it */
156 #if ENABLE_FEATURE_RUN_PARTS_LONG_OPTIONS
157 static const char runparts_longopts[] ALIGN1 =
158 "arg\0" Required_argument "a"
159 "umask\0" Required_argument "u"
160 //TODO: "verbose\0" No_argument "v"
161 "reverse\0" No_argument "\xf0"
162 "test\0" No_argument "\xf1"
163 "exit-on-error\0" No_argument "\xf2"
164 #if ENABLE_FEATURE_RUN_PARTS_FANCY
165 "list\0" No_argument "\xf3"
170 int run_parts_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
171 int run_parts_main(int argc UNUSED_PARAM, char **argv)
173 const char *umask_p = "22";
174 llist_t *arg_list = NULL;
180 #if ENABLE_FEATURE_RUN_PARTS_LONG_OPTIONS
181 applet_long_options = runparts_longopts;
183 /* We require exactly one argument: the directory name */
184 opt_complementary = "=1";
185 getopt32(argv, "a:*u:", &arg_list, &umask_p);
187 umask(xstrtou_range(umask_p, 8, 0, 07777));
190 while (arg_list && n < NUM_CMD) {
191 cmd[n++] = llist_pop(&arg_list);
193 /* cmd[n] = NULL; - is already zeroed out */
195 /* run-parts has to sort executables by name before running them */
197 recursive_action(argv[optind],
198 ACTION_RECURSE|ACTION_FOLLOWLINKS,
199 act, /* file action */
200 act, /* dir action */
201 NULL, /* user data */
208 qsort(names, cur, sizeof(char *), bb_alphasort);
212 char *name = *names++;
215 if (option_mask32 & (OPT_t | OPT_l)) {
220 ret = spawn_and_wait(cmd);
225 bb_perror_msg("can't execute '%s'", name);
227 bb_error_msg("%s: exit status %u", name, ret & 0xff);
229 if (option_mask32 & OPT_e)